US2571325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(beta-hydroxyethyl)-3,4,5-trihydroxybenzoic acid amide
Assignee: F Hoffmann La Roche AG
•
Filing: 1950-01-31
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Granted: 1951-10-16
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Expires: 1970-01-31
Abstract
No abstract record available.
Inventors
- 👤 Zentner Margaret Rose
- 👤 Haas Gerhard Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:23
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2463461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |